‘::’ method is used to refer to modules inside a module.
If you define a method inside a module eg)
Then you create a module and define an instance method by the name ‘check’
This instance method can only be access by an instance. So it can be accessed by instances of classes that have included that module only.
You can get the method object directly using Test.instance_method(:method_name), this will give you the UnboundMethod obejct which you can then bind to an instance of an object and use it if you really needed to, other than that I am not sure if you could do anything about it directly.
If you want to define a method inside a module and be able to access it directly using the module without any inclusion & instantiation then you should do the following:
Now you can call the method check using Test.check #=> check